Kweekhuisgas

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Kweekhuisgasse is gasse in die Aarde se atmosfeer wat radiasie in die termiese infrarooi band absorbeer en uitstraal. Hierdie proses is die fundamentele oorsaak van die kweekhuiseffek.[1] Die vernaamste kweekhuisgasse in die Aarde se atmosfeer is waterdamp, koolstofdioksied, metaan, laggas en osoon. In die sonnestelsel bevat die atmosfere van Venus, Mars en Titan ook gasse wat die kweekhuiseffek veroorsaak. Kweekhuisgasse het 'n geweldige invloed op die temperatuur van die Aarde se atmosfeer; sonder hierdie gasse sal die Aarde se oppervlakte gemiddeld 33°C kouer wees.[2][3][4][5]

Die verbranding van fossielbrandstowwe sedert die begin van die Industriële Revolusie het die vlakke van koolstofdioksied in die atmosfeer beduidend laat toeneem.[6]

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  1. IPCC AR4 SYR Appendix Glossary”. (PDF) URL besoek op 14 December 2008.
  2. Note that the Greenhouse Effect produces a temperature increase of about 33 °C (59 °F) with respect to black body predictions and not a surface temperature of 33 °C (91 °F) which is 32 °F higher. The average surface temperature is about 14 °C (57 °F). Also note that both the Celsius and Fahrenheit temperatures are expressed to 2 significant figures even though the conversion formula produces 3.
  3. Karl TR, Trenberth KE (2003). “Modern Global Climate Change”. Science 302 (5651): 1719–23. DOI:10.1126/science.1090228.
  4. Le Treut H, Somerville R, Cubasch U, Ding Y, Mauritzen C, Mokssit A, Peterson T and Prather M (2007). Historical Overview of Climate Change Science In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M and Miller HL, editors) (PDF), Cambridge University Press. Besoek op 14 December 2008. 
  5. NASA Science Mission Directorate article on the water cycle
  6. Frequently Asked Global Change Questions, Carbon Dioxide Information Analysis Center